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  Plantae
    Viridiplantae
     Streptophyta
     Embryophyta
      Tracheophyta
        Spermatophytina
            Magnoliopsida
                  Asteranae
                    Lamiales
                           [Callitrichales]
                           [Plantaginales]
                           [Scrophulariales]
                            Orobanchaceae
                                     Aeginetia
                                             Aeginetia indica
                                     Afzelia
                                             Afzelia africana
                                             Afzelia bella
                                             Afzelia pectinata
                                             Afzelia quanzensis
                                     Agalinis
                                           [Tomanthera]
                                             Agalinis aphylla
                                             Agalinis aspera
                                             Agalinis auriculata
                                                   [Aureolaria auriculata]
                                                   [Otophylla auriculata]
                                                   [Tomanthera auriculata]
                                             Agalinis caddoensis
                                                   [Tomanthera caddoensis]
                                             Agalinis calycina
                                             Agalinis decemloba
                                                   [Agalinis acuta]
                                             Agalinis densiflora
                                                   [Otophylla densiflora]
                                                   [Tomanthera densiflora]
                                             Agalinis divaricata
                                             Agalinis edwardsiana
                                                   [Agalinis edwardsiana var. glabra]
                                             Agalinis fasciculata
                                                   [Agalinis fasciculata var. peninsularis]
                                                   [Agalinis purpurea var. racemulosa]
                                                   [Agalinis virgata]
                                             Agalinis filicaulis
                                             Agalinis filifolia
                                             Agalinis flexicaulis
                                             Agalinis gattingeri
                                             Agalinis georgiana
                                             Agalinis harperi
                                                   [Agalinis delicatula]
                                                   [Agalinis pinetorum var. delicatula]
                                                   [Agalinis pinetorum]
                                             Agalinis heterophylla
                                             Agalinis homalantha
                                                   [Agalinis nuttallii]
                                             Agalinis laxa
                                             Agalinis linifolia
                                             Agalinis maritima
                                               Agalinis maritima var. grandiflora
                                               Agalinis maritima var. maritima
                                             Agalinis navasotensis
                                             Agalinis neoscotica
                                                   [Agalinis paupercula var. neoscotica]
                                                   [Agalinis purpurea var. neoscotica]
                                             Agalinis obtusifolia
                                                   [Agalinis parvifolia]
                                             Agalinis oligophylla
                                                   [Agalinis oligophylla var. pseudaphylla]
                                                   [Agalinis pseudaphylla]
                                                   [Tomanthera pseudaphylla]
                                             Agalinis paupercula
                                             Agalinis plukenetii
                                                   [Agalinis keyensis]
                                             Agalinis pulchella
                                             Agalinis purpurea
                                               Agalinis purpurea var. parviflora
                                                     [Agalinis paupercula var. borealis]
                                                     [Agalinis paupercula var. paupercula]
                                               Agalinis purpurea var. purpurea
                                                     [Agalinis purpurea var. carteri]
                                             Agalinis setacea
                                                   [Agalinis holmiana]
                                                   [Agalinis stenophylla]
                                             Agalinis skinneriana
                                                   [Tomanthera skinneriana]
                                             Agalinis spiciflora
                                             Agalinis strictifolia
                                             Agalinis tenella
                                             Agalinis tenuifolia
                                                   [Agalinis besseyana]
                                                   [Agalinis tenuifolia ssp. leucanthera]
                                                   [Agalinis tenuifolia var. leucanthera]
                                                   [Agalinis tenuifolia var. macrophylla]
                                                   [Agalinis tenuifolia var. parviflora]
                                                   [Agalinis tenuifolia var. polyphylla]
                                                   [Agalinis tenuifolia var. tenuifolia]
                                             Agalinis viridis
                                     Alectra
                                             Alectra aspera
                                                   [Alectra fluminensis]
                                                   [Glossostylis aspera]
                                                   [Melasma melampyroides]
                                                   [Pedicularis melampyroides]
                                             Alectra capensis
                                     Anoplanthus
                                     Aphyllon
                                             Aphyllon arenosum
                                             Aphyllon cooperi
                                     Aureolaria
                                             Aureolaria flava
                                                   [Agalinis flava var. macrantha]
                                                   [Agalinis flava]
                                                   [Aureolaria calycosa]
                                                   [Aureolaria flava ssp. macrantha]
                                                   [Aureolaria flava ssp. reticulata]
                                                   [Aureolaria flava ssp. typica]
                                                   [Aureolaria flava var. flava]
                                                   [Aureolaria flava var. macrantha]
                                                   [Aureolaria flava var. reticulata]
                                                   [Aureolaria reticulata]
                                                   [Dasistoma calycosa]
                                                   [Dasistoma flava]
                                             Aureolaria grandiflora
                                                   [Agalinis grandiflora var. serrata]
                                                   [Agalinis grandiflora]
                                                   [Aureolaria grandiflora ssp. cinerea]
                                                   [Aureolaria grandiflora ssp. pulchra]
                                                   [Aureolaria grandiflora ssp. serrata]
                                                   [Aureolaria grandiflora ssp. typica]
                                                   [Aureolaria grandiflora var. cinerea]
                                                   [Aureolaria grandiflora var. grandiflora]
                                                   [Aureolaria grandiflora var. pulchra]
                                                   [Aureolaria grandiflora var. serrata]
                                                   [Dasistoma grandiflora]
                                                   [Dasistoma serrata]
                                             Aureolaria levigata
                                                   [Agalinis laevigata]
                                                   [Agalinis levigata]
                                                   [Aureolaria laevigata]
                                                   [Dasistoma laevigata]
                                                   [Dasistoma levigata]
                                             Aureolaria patula
                                                   [Dasistoma patula]
                                             Aureolaria pectinata
                                                   [Agalinis pedicularia var. pectinata]
                                                   [Aureolaria pectinata ssp. eurycarpa]
                                                   [Aureolaria pectinata ssp. floridana]
                                                   [Aureolaria pectinata ssp. transcendens]
                                                   [Aureolaria pectinata ssp. typica]
                                                   [Aureolaria pectinata var. eurycarpa]
                                                   [Aureolaria pectinata var. floridana]
                                                   [Aureolaria pectinata var. ozarkensis]
                                                   [Aureolaria pectinata var. transcendens]
                                                   [Aureolaria pedicularia var. pectinata]
                                             Aureolaria pedicularia
                                                   [Agalinis pedicularia var. ambigens]
                                                   [Agalinis pedicularia var. caesariensis]
                                                   [Agalinis pedicularia]
                                                   [Aureolaria pedicularia ssp. ambigens]
                                                   [Aureolaria pedicularia ssp. austromontana]
                                                   [Aureolaria pedicularia ssp. caesariensis]
                                                   [Aureolaria pedicularia ssp. carolinensis]
                                                   [Aureolaria pedicularia ssp. intercedens]
                                                   [Aureolaria pedicularia ssp. typica]
                                                   [Aureolaria pedicularia var. ambigens]
                                                   [Aureolaria pedicularia var. austromontana]
                                                   [Aureolaria pedicularia var. caesariensis]
                                                   [Aureolaria pedicularia var. carolinensis]
                                                   [Aureolaria pedicularia var. intercedens]
                                                   [Aureolaria pedicularia var. pedicularia]
                                                   [Dasistoma pectinata]
                                                   [Dasistoma pedicularia]
                                             Aureolaria virginica
                                                   [Agalinis virginica]
                                                   [Aureolaria dispersa]
                                                   [Aureolaria microcarpa]
                                                   [Dasistoma dispersa]
                                                   [Dasistoma virginica]
                                     Bartsia
                                             Bartsia alpina
                                     Bellardia
                                             Bellardia trixago
                                                   [Bartsia trixago]
                                     Boschniakia
                                             Boschniakia rossica
                                     Brachystigma
                                             Brachystigma wrightii
                                     Buchnera
                                             Buchnera americana
                                             Buchnera floridana
                                                   [Buchnera breviflora]
                                             Buchnera longifolia
                                                   [Buchnera elongata]
                                             Buchnera obliqua
                                                   [Buchnera arizonica]
                                             Buchnera pusilla
                                     Buttonia
                                             Buttonia hildebrandtii
                                     Castilleja
                                             Castilleja X porterae
                                             Castilleja affinis
                                               Castilleja affinis ssp. affinis
                                                     [Castilleja affinis ssp. insularis]
                                                     [Castilleja affinis var. contentiosa]
                                                     [Castilleja douglasii ssp. insularis]
                                                     [Castilleja wightii ssp. anacapensis]
                                                     [Castilleja wightii ssp. inflata]
                                                     [Castilleja wightii ssp. rubra]
                                                     [Castilleja wightii ssp. wightii]
                                               Castilleja affinis ssp. litoralis
                                                     [Castilleja wightii ssp. litoralis]
                                               Castilleja affinis ssp. neglecta
                                             Castilleja ambigua
                                               Castilleja ambigua ssp. ambigua
                                                     [Orthocarpus castillejoides var. castillejoides]
                                               Castilleja ambigua ssp. humboldtiensis
                                                     [Orthocarpus castillejoides var. humboldtiensis]
                                               Castilleja ambigua ssp. insalutata
                                                     [Orthocarpus castillejoides var. insalutatus]
                                             Castilleja angustifolia
                                               Castilleja angustifolia var. angustifolia
                                                     [Castilleja angustifolia var. bradburii]
                                               Castilleja angustifolia var. dubia
                                                     [Castilleja martinii ssp. ewanii]
                                                     [Castilleja martinii var. ewanii]
                                               Castilleja angustifolia var. flavescens
                                             Castilleja annua
                                             Castilleja applegatei
                                               Castilleja applegatei ssp. applegatei
                                                     [Castilleja applegatei var. applegatei]
                                               Castilleja applegatei ssp. disticha
                                               Castilleja applegatei ssp. martinii
                                                     [Castilleja martinii var. clokeyi]
                                                     [Castilleja martinii var. martinii]
                                               Castilleja applegatei ssp. pallida
                                                     [Castilleja applegatei var. breweri]
                                                     [Castilleja applegatei var. pallida]
                                                     [Castilleja breweri var. pallida]
                                                     [Castilleja glandulifera ssp. pallida]
                                               Castilleja applegatei ssp. pinetorum
                                                     [Castilleja applegatei var. fragilis]
                                                     [Castilleja applegatei var. pinetorum]
                                                     [Castilleja applegatei var. viscida]
                                             Castilleja aquariensis
                                             Castilleja arachnoidea
                                                   [Castilleja arachnoidea ssp. arachnoidea]
                                                   [Castilleja arachnoidea ssp. shastensis]
                                                   [Castilleja filifolia]
                                                   [Castilleja payneae]
                                             Castilleja arvensis
                                             Castilleja attenuata
                                                   [Orthocarpus attenuatus]
                                             Castilleja austromontana
                                             Castilleja barnebyana
                                             Castilleja brevilobata
                                             Castilleja brevistyla
                                                   [Orthocarpus brevistylus]
                                             Castilleja breweri
                                             Castilleja calcicola
                                             Castilleja californica
                                             Castilleja campestris
                                               Castilleja campestris ssp. campestris
                                               Castilleja campestris ssp. succulenta
                                                     [Orthocarpus campestris var. succulentus]
                                             Castilleja caudata
                                               Castilleja caudata var. auricoma
                                               Castilleja caudata var. caudata
                                                     [Castilleja pallida ssp. caudata]
                                                     [Castilleja pallida var. caudata]
                                             Castilleja cervina
                                             Castilleja chambersii
                                             Castilleja chlorotica
                                             Castilleja christii
                                             Castilleja chromosa
                                             Castilleja chrymactis
                                                   [Castilleja leschkeana]
                                             Castilleja chrysantha
                                                   [Castilleja ownbeyana]
                                             Castilleja cinerea
                                             Castilleja citrina
                                             Castilleja clokeyi
                                             Castilleja coccinea
                                                   [Castilleja ludoviciana]
                                             Castilleja confusa
                                             Castilleja covilleana
                                             Castilleja crista-galli
                                             Castilleja cryptantha
                                             Castilleja cusickii
                                                   [Castilleja lutea]
                                             Castilleja densiflora
                                               Castilleja densiflora ssp. densiflora
                                                     [Orthocarpus densiflorus var. densiflorus]
                                                     [Orthocarpus densiflorus var. noctuinus]
                                               Castilleja densiflora ssp. gracilis
                                                     [Orthocarpus densiflorus var. gracilis]
                                               Castilleja densiflora ssp. obispoensis
                                                     [Orthocarpus densiflorus var. obispoensis]
                                             Castilleja dissitiflora
                                             Castilleja disticha
                                             Castilleja dixonii
                                             Castilleja douglasii
                                             Castilleja elata
                                             Castilleja elegans
                                                   [Castilleja pallida ssp. elegans]
                                                   [Castilleja pallida var. elegans]
                                             Castilleja elkoensis
                                             Castilleja elmeri
                                                   [Castilleja angustifolia var. whitedii]
                                             Castilleja elongata
                                             Castilleja ewanii
                                             Castilleja exilis
                                             Castilleja exserta
                                               Castilleja exserta ssp. exserta
                                                     [Orthocarpus purpurascens var. pallidus]
                                                     [Orthocarpus purpurascens var. palmeri]
                                                     [Orthocarpus purpurascens var. purpurascens]
                                               Castilleja exserta ssp. latifolia
                                                     [Orthocarpus purpurascens var. latifolius]
                                               Castilleja exserta ssp. venusta
                                                     [Orthocarpus purpurascens var. ornatus]
                                                     [Orthocarpus purpurascens var. venustus]
                                             Castilleja flava
                                               Castilleja flava var. flava
                                               Castilleja flava var. rustica
                                             Castilleja flavescens
                                             Castilleja foliolosa
                                             Castilleja franciscana
                                             Castilleja fraterna
                                             Castilleja fulva
                                             Castilleja genevievana
                                             Castilleja glandulifera
                                             Castilleja gracillima
                                             Castilleja grisea
                                                   [Castilleja hololeuca ssp. grisea]
                                             Castilleja gyroloba
                                             Castilleja haydenii
                                             Castilleja henryae
                                             Castilleja hispida
                                               Castilleja hispida ssp. acuta
                                                     [Castilleja hispida var. acuta]
                                               Castilleja hispida ssp. brevilobata
                                               Castilleja hispida ssp. hispida
                                                     [Castilleja angustifolia var. hispida]
                                                     [Castilleja hispida ssp. abbreviata]
                                             Castilleja hololeuca
                                             Castilleja hyetophila
                                             Castilleja hyperborea
                                                   [Castilleja villosissima]
                                             Castilleja inconstans
                                             Castilleja indivisa
                                             Castilleja inflata
                                             Castilleja integra
                                               Castilleja integra var. gloriosa
                                               Castilleja integra var. integra
                                             Castilleja inverta
                                             Castilleja jepsonii
                                             Castilleja kaibabensis
                                             Castilleja kraliana
                                             Castilleja kuschei
                                             Castilleja labiata
                                             Castilleja lacera
                                                   [Orthocarpus lacerus]
                                             Castilleja lanata
                                               Castilleja lanata ssp. hololeuca
                                               Castilleja lanata ssp. lanata
                                             Castilleja lasiorhyncha
                                                   [Orthocarpus lasiorhynchus]
                                             Castilleja latifolia
                                             Castilleja lemmonii
                                                   [Castilleja culbertsonii]
                                                   [Castilleja lassenensis]
                                             Castilleja levisecta
                                             Castilleja linariifolia
                                                   [Castilleja linariifolia var. omnipubescens]
                                                   [Castilleja linearis]
                                                   [Castilleja trainii]
                                             Castilleja lineariiloba
                                                   [Orthocarpus lineariilobus]
                                                   [Orthocarpus linearilobus]
                                             Castilleja lineata
                                             Castilleja linoides
                                             Castilleja litoralis
                                             Castilleja longispica
                                             Castilleja lutescens
                                             Castilleja martinii
                                             Castilleja mearnsii
                                             Castilleja mendocinensis
                                                   [Castilleja latifolia ssp. mendocinensis]
                                             Castilleja mexicana
                                                   [Castilleja tortifolia]
                                             Castilleja miniata
                                               Castilleja miniata ssp. dixonii
                                                     [Castilleja miniata var. dixonii]
                                               Castilleja miniata ssp. elata
                                                     [Castilleja mexicana var. elata]
                                               Castilleja miniata ssp. miniata
                                                     [Castilleja miniata var. miniata]
                                             Castilleja minor
                                               Castilleja minor ssp. minor
                                               Castilleja minor ssp. spiralis
                                                     [Castilleja stenantha ssp. spiralis]
                                             Castilleja mollis
                                             Castilleja montigena
                                             Castilleja nana
                                                   [Castilleja lapidicola]
                                             Castilleja neglecta
                                             Castilleja nervata
                                                   [Castilleja cruenta]
                                             Castilleja nivea
                                             Castilleja oblongifolia
                                             Castilleja occidentalis
                                             Castilleja oreopola
                                             Castilleja oresbia
                                             Castilleja organorum
                                             Castilleja ornata
                                             Castilleja pallescens
                                               Castilleja pallescens var. inverta
                                                     [Castilleja pilosa var. inverta]
                                               Castilleja pallescens var. pallescens
                                             Castilleja pallida
                                             Castilleja parviflora
                                               Castilleja parviflora var. albida
                                                     [Castilleja oreopola ssp. albida]
                                               Castilleja parviflora var. olympica
                                               Castilleja parviflora var. oreopola
                                               Castilleja parviflora var. parviflora
                                             Castilleja parvula
                                             Castilleja patriotica
                                                   [Castilleja patriotica var. blumeri]
                                             Castilleja peckiana
                                             Castilleja peirsonii
                                             Castilleja pilosa
                                               Castilleja pilosa var. longispica
                                               Castilleja pilosa var. pilosa
                                                     [Castilleja pilosa ssp. jusselii]
                                                     [Castilleja rubida var. monoensis]
                                               Castilleja pilosa var. steenensis
                                             Castilleja pinetorum
                                             Castilleja plagiotoma
                                             Castilleja praeterita
                                             Castilleja pruinosa
                                                   [Castilleja gleasoni]
                                                   [Castilleja gleasonii]
                                                   [Castilleja pruinosa ssp. gleasoni]
                                                   [Castilleja pruinosa ssp. gleasonii]
                                             Castilleja psittacina
                                             Castilleja puberula
                                             Castilleja pulchella
                                             Castilleja purpurea
                                               Castilleja purpurea var. citrina
                                               Castilleja purpurea var. lindheimeri
                                               Castilleja purpurea var. purpurea
                                             Castilleja pyramidalis
                                             Castilleja raupii
                                             Castilleja revealii
                                                   [Castilleja parvula var. revealii]
                                             Castilleja rhexiifolia
                                                   [Castilleja lauta]
                                                   [Castilleja leonardii]
                                                   [Castilleja oregonensis]
                                             Castilleja rigida
                                                   [Castilleja latebracteata]
                                             Castilleja roseana
                                             Castilleja rubicundula
                                               Castilleja rubicundula ssp. lithospermoides
                                                     [Orthocarpus lithospermoides var. bicolor]
                                                     [Orthocarpus lithospermoides var. lithospermoides]
                                               Castilleja rubicundula ssp. rubicundula
                                             Castilleja rubida
                                             Castilleja rupicola
                                             Castilleja rustica
                                             Castilleja salsuginosa
                                             Castilleja scabrida
                                               Castilleja scabrida var. barnebyana
                                               Castilleja scabrida var. scabrida
                                             Castilleja schizotricha
                                                   [Castilleja arachnoidea ssp. schizotricha]
                                             Castilleja septentrionalis
                                                   [Castilleja acuminata]
                                                   [Castilleja pallida ssp. septentrionalis]
                                                   [Castilleja pallida var. septentrionalis]
                                             Castilleja sessiliflora
                                             Castilleja setosa
                                             Castilleja spiralis
                                             Castilleja steenensis
                                             Castilleja stenantha
                                             Castilleja subinclusa
                                               Castilleja subinclusa ssp. franciscana
                                                     [Castilleja subinclusa var. franciscana]
                                               Castilleja subinclusa ssp. subinclusa
                                             Castilleja suksdorfii
                                             Castilleja sulphurea
                                                   [Castilleja luteovirens]
                                                   [Castilleja mogollonica]
                                                   [Castilleja rhexiifolia var. sulphurea]
                                             Castilleja taedifera
                                             Castilleja tenuiflora
                                                   [Castilleja laxa]
                                             Castilleja tenuis
                                                   [Orthocarpus hispidus]
                                             Castilleja thompsonii
                                                   [Castilleja villicaulis]
                                             Castilleja uliginosa
                                             Castilleja unalaschcensis
                                             Castilleja viscida
                                             Castilleja viscidula
                                                   [Castilleja magnistylis]
                                             Castilleja wallowensis
                                             Castilleja wherryana
                                             Castilleja wightii
                                             Castilleja williamsii
                                             Castilleja wootonii
                                                   [Castilleja ciliata]
                                             Castilleja xanthotricha
                                             Castilleja yukonis
                                                   [Castilleja muelleri]
                                             Castilleja zionis
                                     Chloropyron
                                             Chloropyron maritimum
                                               Chloropyron maritimum ssp. canescens
                                                     [Cordylanthus maritimus ssp. canescens]
                                                     [Cordylanthus maritimus var. canescens]
                                               Chloropyron maritimum ssp. maritimus
                                                     [Cordylanthus maritimus ssp. maritimus]
                                               Chloropyron maritimum ssp. palustre
                                                     [Cordylanthus maritimus ssp. palustris]
                                             Chloropyron molle
                                               Chloropyron molle ssp. hispidum
                                                     [Cordylanthus mollis ssp. hispidus]
                                               Chloropyron molle ssp. molle
                                                     [Cordylanthus mollis ssp. mollis]
                                             Chloropyron palmatum
                                                   [Cordylanthus carnulosus]
                                                   [Cordylanthus palmatus ssp. carnulosus]
                                                   [Cordylanthus palmatus]
                                             Chloropyron tecopense
                                                   [Cordylanthus tecopensis]
                                     Cistanche
                                             Cistanche deserticola
                                     Conopholis
                                             Conopholis alpina
                                               Conopholis alpina var. mexicana
                                                     [Orobanche multiflora var. xanthochroa]
                                             Conopholis americana
                                                   [Orobanche americana]
                                             Conopholis ludoviciana
                                             Conopholis mexicana
                                     Cordylanthus
                                             Cordylanthus bernardinus
                                             Cordylanthus bolanderi
                                             Cordylanthus brunneus
                                             Cordylanthus canescens
                                             Cordylanthus capillaris
                                             Cordylanthus capitatus
                                                   [Cordylanthus nevadensis]
                                             Cordylanthus compactus
                                             Cordylanthus diffusus
                                             Cordylanthus eremicus
                                               Cordylanthus eremicus ssp. eremicus
                                                     [Cordylanthus eremicus ssp. bernardinus]
                                                     [Cordylanthus ramosus ssp. eremicus]
                                               Cordylanthus eremicus ssp. kernensis
                                             Cordylanthus ferrisianus
                                             Cordylanthus filifolius
                                             Cordylanthus hansenii
                                             Cordylanthus helleri
                                             Cordylanthus hispidus
                                             Cordylanthus kingii
                                               Cordylanthus kingii ssp. densiflorus
                                                     [Cordylanthus kingii var. densiflorus]
                                               Cordylanthus kingii ssp. helleri
                                                     [Cordylanthus kingii var. helleri]
                                               Cordylanthus kingii ssp. kingii
                                             Cordylanthus laxiflorus
                                             Cordylanthus littoralis
                                             Cordylanthus maritimus
                                             Cordylanthus mollis
                                             Cordylanthus nevinii
                                             Cordylanthus nidularius
                                             Cordylanthus pallescens
                                             Cordylanthus parviflorus
                                                   [Cordylanthus glandulosus]
                                             Cordylanthus pilosus
                                               Cordylanthus pilosus ssp. hansenii
                                               Cordylanthus pilosus ssp. pilosus
                                                     [Cordylanthus pilosus ssp. diffusus]
                                               Cordylanthus pilosus ssp. trifidus
                                                     [Cordylanthus pilosus var. trifidus]
                                             Cordylanthus platycephalus
                                             Cordylanthus pringlei
                                             Cordylanthus ramosus
                                                   [Cordylanthus ramosus ssp. setosus]
                                                   [Cordylanthus ramosus var. puberulus]
                                             Cordylanthus rigidus
                                               Cordylanthus rigidus ssp. brevibracteatus
                                               Cordylanthus rigidus ssp. littoralis
                                                     [Cordylanthus rigidus var. littoralis]
                                               Cordylanthus rigidus ssp. rigidus
                                                     [Cordylanthus littoralis ssp. platycephalus]
                                               Cordylanthus rigidus ssp. setigerus
                                             Cordylanthus tenuifolius
                                             Cordylanthus tenuis
                                               Cordylanthus tenuis ssp. barbatus
                                               Cordylanthus tenuis ssp. brunneus
                                               Cordylanthus tenuis ssp. capillaris
                                               Cordylanthus tenuis ssp. pallescens
                                               Cordylanthus tenuis ssp. tenuis
                                                     [Cordylanthus pilosus ssp. bolanderi]
                                               Cordylanthus tenuis ssp. viscidus
                                             Cordylanthus viscidus
                                             Cordylanthus wrightii
                                               Cordylanthus wrightii ssp. kaibabensis
                                               Cordylanthus wrightii ssp. tenuifolius
                                               Cordylanthus wrightii ssp. wrightii
                                                     [Cordylanthus wrightii var. pauciflorus]
                                     Cycnium
                                             Cycnium tubulosum
                                                   [Cycnium tubulosum ssp. montanum]
                                     Dasistoma
                                             Dasistoma macrophylla
                                                   [Afzelia macrophylla]
                                                   [Seymeria macrophylla]
                                     Dicranostegia
                                             Dicranostegia orcuttiana
                                                   [Cordylanthus orcuttianus]
                                     Elephantella
                                             Elephantella attollens
                                     Epifagus
                                             Epifagus virginiana
                                                   [Leptamnium virginianum]
                                     Euphrasia
                                             Euphrasia X aequalis
                                             Euphrasia borealis
                                                   [Euphrasia X vestita]
                                             Euphrasia bottnica
                                             Euphrasia curta
                                                   [Euphrasia X aspera]
                                                   [Euphrasia X villosa]
                                             Euphrasia disjuncta
                                                   [Euphrasia arctica var. disjuncta]
                                             Euphrasia frigida
                                                   [Euphrasia arctica var. inundata]
                                                   [Euphrasia arctica var. obtusata]
                                                   [Euphrasia arctica var. submollis]
                                                   [Euphrasia arctica]
                                                   [Euphrasia artica]
                                                   [Euphrasia frigida var. obtusata]
                                                   [Euphrasia frigida var. submollis]
                                             Euphrasia hudsoniana
                                               Euphrasia hudsoniana var. contracta
                                               Euphrasia hudsoniana var. hudsoniana
                                               Euphrasia hudsoniana var. ramosior
                                             Euphrasia micrantha
                                             Euphrasia mollis
                                                   [Euphrasia arctica var. mollis]
                                             Euphrasia nemorosa
                                                   [Euphrasia americana]
                                                   [Euphrasia arctica ssp. borealis]
                                                   [Euphrasia pectinata]
                                                   [Euphrasia tatarica]
                                             Euphrasia oakesii
                                                   [Euphrasia williamsii var. vestita]
                                                   [Euphrasia williamsii]
                                             Euphrasia officinalis
                                                   [Euphrasia rostkoviana]
                                             Euphrasia ostenfeldii
                                             Euphrasia purpurea
                                             Euphrasia randii
                                                   [Euphrasia randii var. farlowii]
                                                   [Euphrasia randii var. reeksii]
                                             Euphrasia salisburgensis
                                               Euphrasia salisburgensis var. hibernica
                                             Euphrasia stricta
                                                   [Euphrasia brevipila]
                                                   [Euphrasia condensata]
                                                   [Euphrasia rigidula]
                                             Euphrasia subarctica
                                                   [Euphrasia arctica var. dolosa]
                                                   [Euphrasia disjuncta var. dolosa]
                                                   [Euphrasia pennellii]
                                             Euphrasia suborbicularis
                                                   [Euphrasia mollis var. laurentiana]
                                             Euphrasia tetraquetra
                                             Euphrasia vinacea
                                     Glossostylis
                                     Kopsiopsis
                                             Kopsiopsis hookeri
                                                   [Boschniakia hookeri]
                                             Kopsiopsis strobilacea
                                                   [Boschniakia strobilacea]
                                     Leptamnium
                                     Macranthera
                                             Macranthera flammea
                                     Melampyrum
                                             Melampyrum latifolium
                                             Melampyrum lineare
                                               Melampyrum lineare var. latifolium
                                               Melampyrum lineare var. lineare
                                                     [Melampyrum lineare var. americanum]
                                               Melampyrum lineare var. pectinatum
                                     Melasma
                                     Myzorrhiza
                                             Myzorrhiza californica
                                             Myzorrhiza cooperi
                                             Myzorrhiza corymbosa
                                             Myzorrhiza ludoviciana
                                             Myzorrhiza multiflora
                                     Nesogenes
                                             Nesogenes rotensis
                                     Odontites
                                             Odontites vernus
                                                   [Odontites vernus ssp. vernus]
                                             Odontites vulgaris
                                                   [Odontites serotina]
                                                   [Odontites serotinus]
                                                   [Odontites vernus ssp. serotinus]
                                     Orobanche
                                             Orobanche bulbosa
                                                   [Aphyllon tuberosum]
                                                   [Myzorrhiza tuberosa]
                                                   [Phelipaea tuberosa]
                                             Orobanche californica
                                               Orobanche californica ssp. californica
                                                     [Orobanche grayana var. nelsonii]
                                                     [Orobanche grayana var. violacea]
                                               Orobanche californica ssp. condensa
                                               Orobanche californica ssp. feudgei
                                                     [Orobanche grayana var. feudgei]
                                               Orobanche californica ssp. grandis
                                               Orobanche californica ssp. grayana
                                                     [Orobanche californica var. grayana]
                                               Orobanche californica ssp. jepsonii
                                                     [Orobanche californica var. jepsoni]
                                                     [Orobanche grayana var. jepsonii]
                                             Orobanche cernua
                                             Orobanche cooperi
                                                   [Orobanche cooperi ssp. latiloba]
                                                   [Orobanche ludoviciana var. latiloba]
                                               Orobanche cooperi ssp. cooperi
                                                     [Orobanche ludoviciana var. cooperi]
                                             Orobanche corymbosa
                                               Orobanche corymbosa ssp. corymbosa
                                                     [Orobanche californica var. corymbosa]
                                               Orobanche corymbosa ssp. mutabilis
                                             Orobanche crenata
                                             Orobanche dugesii
                                                   [Aphyllon dugesii]
                                             Orobanche fasciculata
                                                   [Anoplanthus fasciculatus]
                                                   [Aphyllon fasciculatum]
                                                   [Orobanche fasciculata var. franciscana]
                                                   [Orobanche fasciculata var. lutea]
                                                   [Orobanche fasciculata var. subulata]
                                                   [Orobanche fasciculata var. typica]
                                                   [Thalesia fasciculata]
                                                   [Thalesia lutea]
                                             Orobanche grayana
                                             Orobanche hederae
                                             Orobanche ludoviciana
                                               Orobanche ludoviciana ssp. ludoviciana
                                                     [Orobanche ludoviciana var. arenosa]
                                                     [Orobanche ludoviciana var. genuina]
                                                     [Orobanche multiflora var. arenosa]
                                               Orobanche ludoviciana ssp. multiflora
                                                     [Orobanche ludoviciana var. multiflora]
                                                     [Orobanche multiflora var. pringlei]
                                                     [Orobanche multiflora var. typica]
                                             Orobanche minor
                                             Orobanche multicaulis
                                               Orobanche multicaulis var. multicaulis
                                                     [Orobanche multicaulis ssp. multicaulis]
                                                     [Orobanche multicaulis var. genuina]
                                               Orobanche multicaulis var. palmeri
                                                     [Orobanche multicaulis ssp. palmeri]
                                             Orobanche multiflora
                                             Orobanche parishii
                                               Orobanche parishii ssp. brachyloba
                                                     [Orobanche parishii var. brachylob]
                                               Orobanche parishii ssp. parishii
                                                     [Orobanche californica var. parishii]
                                             Orobanche pinorum
                                                   [Aphyllon pinorum]
                                                   [Myzorrhiza pinorum]
                                                   [Phelipaea pinorum]
                                             Orobanche ramosa
                                             Orobanche riparia
                                             Orobanche uniflora
                                                   [Aphyllon uniflorum]
                                                   [Orobanche porphyrantha]
                                                   [Orobanche purpurea]
                                                   [Orobanche sedii]
                                                   [Orobanche terrae-novae]
                                                   [Orobanche uniflora ssp. occidentalis]
                                                   [Orobanche uniflora var. minuta]
                                                   [Orobanche uniflora var. occidentalis]
                                                   [Orobanche uniflora var. purpurea]
                                                   [Orobanche uniflora var. sedii]
                                                   [Orobanche uniflora var. terrae-novae]
                                                   [Orobanche uniflora var. typica]
                                                   [Orobanche uniflora var. uniflora]
                                                   [Thalesia uniflora]
                                             Orobanche valida
                                               Orobanche valida ssp. howellii
                                               Orobanche valida ssp. valida
                                                     [Orobanche ludoviciana var. valida]
                                             Orobanche vallicola
                                                   [Orobanche californica var. claremontensis]
                                             Orobanche xanthochroa
                                     Orthocarpus
                                             Orthocarpus barbatus
                                             Orthocarpus bracteosus
                                                   [Orthocarpus bracteosus var. albus]
                                             Orthocarpus campestris
                                             Orthocarpus castillejoides
                                             Orthocarpus copelandii
                                             Orthocarpus cuspidatus
                                               Orthocarpus cuspidatus ssp. copelandii
                                               Orthocarpus cuspidatus ssp. cryptanthus
                                                     [Orthocarpus copelandii var. cryptanthus]
                                               Orthocarpus cuspidatus ssp. cuspidatus
                                             Orthocarpus densiflorus
                                             Orthocarpus erianthus
                                             Orthocarpus exsertus
                                             Orthocarpus faucibarbatus
                                             Orthocarpus imbricatus
                                             Orthocarpus lithospermoides
                                             Orthocarpus luteus
                                             Orthocarpus pachystachyus
                                                   [Orthocarpus pachystachys]
                                             Orthocarpus pilosus
                                             Orthocarpus prupuracens
                                             Orthocarpus purpurascens
                                             Orthocarpus purpureoalbus
                                             Orthocarpus succulentus
                                             Orthocarpus tenuifolius
                                             Orthocarpus tolmiei
                                               Orthocarpus tolmiei ssp. holmgreniorum
                                               Orthocarpus tolmiei ssp. tolmiei
                                     Otophylla
                                     Parentucellia
                                             Parentucellia latifolia
                                             Parentucellia viscosa
                                     Pediculariopsis
                                     Pedicularis
                                             Pedicularis albolabiata
                                             Pedicularis anaticeps
                                             Pedicularis angustifolia
                                                   [Pedicularis angustissima]
                                             Pedicularis arctica
                                             Pedicularis atrosanguinea
                                             Pedicularis attollens
                                                   [Pedicularis attolens]
                                               Pedicularis attollens ssp. attollens
                                               Pedicularis attollens ssp. protogyna
                                             Pedicularis aurantiaca
                                                   [Pedicularis densiflora ssp. aurantiaca]
                                             Pedicularis bracteosa
                                               Pedicularis bracteosa var. atrosanguinea
                                               Pedicularis bracteosa var. bracteosa
                                               Pedicularis bracteosa var. canbyi
                                               Pedicularis bracteosa var. flavida
                                               Pedicularis bracteosa var. latifolia
                                               Pedicularis bracteosa var. pachyrhiza
                                               Pedicularis bracteosa var. paysoniana
                                                     [Pedicularis bracteosa ssp. paysoniana]
                                               Pedicularis bracteosa var. siifolia
                                             Pedicularis canadensis
                                                   [Pedicularis canadensis ssp. canadensis]
                                                   [Pedicularis canadensis ssp. fluviatilis]
                                                   [Pedicularis canadensis var. canadensis]
                                                   [Pedicularis fluviatilis]
                                                   [Pedicularis gladiata]
                                             Pedicularis canbyi
                                             Pedicularis capitata
                                                   [Pedicularis nelsonii]
                                             Pedicularis centranthera
                                                   [Pedicularis centranthera var. exulans]
                                             Pedicularis chamissonis
                                                   [Pedicularis romanzovii]
                                             Pedicularis concinna
                                             Pedicularis contorta
                                               Pedicularis contorta var. contorta
                                               Pedicularis contorta var. ctenophora
                                                     [Pedicularis contorta var. tenophora]
                                               Pedicularis contorta var. rubicunda
                                             Pedicularis crenulata
                                                   [Pedicularis albomarginata]
                                             Pedicularis ctenophora
                                             Pedicularis cystopteridifolia
                                                   [Pedicularis elata]
                                             Pedicularis densiflora
                                                   [Pedicularis attenuata]
                                                   [Pedicularis brunnescens]
                                                   [Pedicularis densiflora ssp. densiflora]
                                             Pedicularis dudleyi
                                             Pedicularis flammea
                                                   [Pedicularis albertae]
                                                   [Pedicularis oederi var. albertae]
                                             Pedicularis flavida
                                             Pedicularis furbishiae
                                             Pedicularis grayi
                                                   [Pedicularis procera]
                                             Pedicularis groenlandica
                                                   [Elephantella groenlandica]
                                                   [Pedicularis groenlandica ssp. groenlandica]
                                                   [Pedicularis groenlandica ssp. surrecta]
                                                   [Pedicularis groenlandica var. surrecta]
                                             Pedicularis hallii
                                             Pedicularis hians
                                             Pedicularis hirsuta
                                             Pedicularis howellii
                                             Pedicularis labradorica
                                                   [Pedicularis euphrasioides]
                                                   [Pedicularis labradorica var. labradorica]
                                                   [Pedicularis labradorica var. sulphurea]
                                             Pedicularis lanata
                                                   [Pedicularis kanei ssp. kanei]
                                                   [Pedicularis kanei ssp. yukonensis]
                                                   [Pedicularis kanei]
                                                   [Pedicularis lanata ssp. lanata]
                                                   [Pedicularis lanata ssp. yukonensis]
                                                   [Pedicularis willdenowii]
                                             Pedicularis lanceolata
                                                   [Pedicularis auriculata]
                                                   [Pedicularis pallida]
                                                   [Pedicularis virginica]
                                             Pedicularis langsdorffii
                                                   [Pedicularis langsdorfii]
                                               Pedicularis langsdorffii ssp. arctica
                                                     [Pedicularis langsdorffii var. arctica]
                                                     [Pedicularis langsdorfii ssp. arctica]
                                                     [Pedicularis langsdorfii var. arctica]
                                               Pedicularis langsdorffii ssp. langsdorffii
                                                     [Pedicularis langsdorfii ssp. langsdorfii]
                                             Pedicularis lapponica
                                             Pedicularis latifolia
                                             Pedicularis lunata
                                             Pedicularis macrodonta
                                                   [Pedicularis parviflora var. macrodonta]
                                             Pedicularis mogollonica
                                             Pedicularis montanensis
                                             Pedicularis oederi
                                                   [Pedicularis versicolor]
                                             Pedicularis ornithorhyncha
                                                   [Pedicularis pedicellata]
                                                   [Pedicularis subnuda]
                                             Pedicularis pachyrhiza
                                             Pedicularis pacifica
                                             Pedicularis paddoensis
                                             Pedicularis palustris
                                               Pedicularis palustris ssp. palustris
                                             Pedicularis parryi
                                               Pedicularis parryi ssp. mogollonica
                                                     [Pedicularis parryi var. mogollonica]
                                               Pedicularis parryi ssp. parryi
                                               Pedicularis parryi ssp. purpurea
                                                     [Pedicularis parryi var. purpurea]
                                             Pedicularis parviflora
                                                   [Pedicularis parviflora ssp. parviflora]
                                             Pedicularis paysoniana
                                             Pedicularis pennellii
                                                   [Pedicularis parviflora ssp. pennellii]
                                                   [Pedicularis pennellii var. insularis]
                                             Pedicularis pulchella
                                                   [Pedicularis puchella]
                                             Pedicularis racemosa
                                               Pedicularis racemosa ssp. alba
                                                     [Pedicularis racemosa var. alba]
                                               Pedicularis racemosa ssp. racemosa
                                             Pedicularis rainierensis
                                             Pedicularis scopulorum
                                             Pedicularis semibarbata
                                               Pedicularis semibarbata var. charlestonensis
                                                     [Pedicularis semibarbata ssp. charlestonensis]
                                               Pedicularis semibarbata var. semibarbata
                                             Pedicularis siifolia
                                             Pedicularis sudetica
                                               Pedicularis sudetica ssp. albolabiata
                                                     [Pedicularis sudetica var. bicolor]
                                               Pedicularis sudetica ssp. arctoeuropaea
                                               Pedicularis sudetica ssp. interior
                                                     [Pedicularis sudetica ssp. interioides]
                                                     [Pedicularis sudetica var. gymnocephala]
                                               Pedicularis sudetica ssp. pacifica
                                                     [Pedicularis sudetica var. pacifica]
                                               Pedicularis sudetica ssp. scopulorum
                                                     [Pedicularis sudetica var. scopulorum]
                                             Pedicularis sylvatica
                                             Pedicularis thompsonii
                                             Pedicularis verticillata
                                                   [Pediculariopsis verticillata]
                                     Phelipaea
                                             Phelipaea erianthera
                                     Rhinanthus
                                             Rhinanthus arcticus
                                             Rhinanthus borealis
                                             Rhinanthus crista-galli
                                             Rhinanthus groenlandicus
                                             Rhinanthus kyrollae
                                             Rhinanthus kyrolliae
                                             Rhinanthus major
                                                   [Rhinanthus alectorolophus]
                                             Rhinanthus minor
                                               Rhinanthus minor ssp. groenlandicus
                                                     [Rhinanthus minor ssp. borealis]
                                               Rhinanthus minor ssp. minor
                                                     [Rhinanthus borealis ssp. kyrollae]
                                                     [Rhinanthus borealis ssp. kyrolliae]
                                                     [Rhinanthus crista-galli var. fallax]
                                             Rhinanthus rigidus
                                             Rhinanthus serotinus
                                             Rhinanthus stenophyllus
                                     Schwalbea
                                             Schwalbea americana
                                                   [Schwalbea americana var. australis]
                                                   [Schwalbea australis]
                                     Seymeria
                                             Seymeria bipinnatisecta
                                                   [Seymeria harvardii]
                                                   [Seymeria havardii]
                                             Seymeria cassioides
                                                   [Afzelia cassioides]
                                             Seymeria pectinata
                                               Seymeria pectinata ssp. pectinata
                                               Seymeria pectinata ssp. peninsularis
                                                     [Afzelia pectinata ssp. peninsularis]
                                             Seymeria scabra
                                             Seymeria texana
                                     Sopubia
                                             Sopubia mannii
                                     Striga
                                             Striga asiatica
                                                   [Striga lutea]
                                             Striga densiflora
                                             Striga gesnerioides
                                             Striga hermonthica
                                     Thalesia
                                     Triphysaria
                                             Triphysaria chinensis
                                             Triphysaria eriantha
                                               Triphysaria eriantha ssp. eriantha
                                                     [Orthocarpus erianthus var. erianthus]
                                               Triphysaria eriantha ssp. rosea
                                                     [Orthocarpus erianthus var. gratiosus]
                                                     [Orthocarpus erianthus var. roseus]
                                             Triphysaria floribunda
                                                   [Orthocarpus floribundus]
                                             Triphysaria micrantha
                                                   [Orthocarpus erianthus var. micranthus]
                                                   [Orthocarpus micranthus]
                                             Triphysaria pusilla
                                                   [Orthocarpus pisillus]
                                                   [Orthocarpus pusillus var. densiuscuus]
                                                   [Orthocarpus pusillus]
                                             Triphysaria versicolor
                                               Triphysaria versicolor ssp. faucibarbatus
                                                     [Orthocarpus faucibarbatus var. faucibarbatus]
                                               Triphysaria versicolor ssp. versicolor
                                                     [Orthocarpus faucibarbatus ssp. albidus]
                                                     [Orthocarpus faucibarbatus var. albidus]